Detectives on Tuesday asked for the public’s help in identifying the man suspected of breaking the skull of a Rancho Cucamonga man with a beer mug while in a restroom of a Covina bar.

The 45-year-old victim suffered six skull fractures as a result of the Aug. 17 assault at Clancy’s Sports Bar at 961 N. Azusa Ave., according to Covina Police Sgt. Ray Marquez. He is out of the hospital, Marquez added.

The victim and the suspect played pool at the bar before the attack.

“During this time, they had a conversation over politics,” Marquez said. “Nobody in the bar said there was an argument. The victim does not recall an argument.”

The victim doesn’t remember details of the conversation, according to Marquez. He said a witness thought the topic was not politics but a woman.

A surveillance video released by police on Tuesday showed what happened after the pool game. The victim walked to the restroom at 11:54 p.m. followed by the suspect who was carrying a beer mug. A woman then followed the suspect but she doesn’t enter the restroom. The suspect walked out, put the mug down on the floor then left with the woman.

Nobody in the bar heard an argument or a commotion or was aware that anything happened in the restroom until the victim’s brother found him unconscious, according to Marquez.

Marquez said the brother was outside smoking earlier, decided to check on the victim and discovered him in the restroom.

As of Wednesday, the assailant remains unidentified and on the loose.

The woman seen in the video is not a suspect but police want to talk to her.

Police described the suspect as a Latino in his 40s, with a mustache, 5 feet 6 inches tall and about 180 pounds. He wore a green polo shirt and blue jeans. He left in a silver colored vehicle with paper plates.

Anyone with information about the suspect is asked to call Covina police Detective Ivan Ostarcevic at 626-384-5620. Anonymous tips can be submitted through Crime Stoppers by calling 800-222-TIPS or at lacrimestoppers.org.

Ruby Gonzales started working for the company in 1991. Since then she has written about cities, school districts, crimes, cold cases, courts, the San Gabriel River, local history, anime, insects, forensics and the early days of the Internet when people still referred to it as the "information superhighway." Her current beat includes breaking news, crimes and courts for the San Gabriel Valley Tribune, Pasadena Star News and Whittier Daily News. When not in crime reporter mode, she frequents the remaining bookstores in the San Gabriel Valley, haunts craft stores or gets dragged to eateries by a relative who is a foodie.